398110313 has 2 divisors, whose sum is σ = 398110314. Its totient is φ = 398110312.

The previous prime is 398110303. The next prime is 398110327. The reversal of 398110313 is 313011893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 355247104 + 42863209 = 18848^2 + 6547^2 .

It is an emirp because it is prime and its reverse (313011893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 398110313 - 2²⁰ = 397061737 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (398110303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199055156 + 199055157.

It is an arithmetic number, because the mean of its divisors is an integer number (199055157).

Almost surely, 2^398110313 is an apocalyptic number.

It is an amenable number.

398110313 is a deficient number, since it is larger than the sum of its proper divisors (1).

398110313 is an equidigital number, since it uses as much as digits as its factorization.

398110313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 398110313 is about 19952.7018972369. The cubic root of 398110313 is about 735.6441900443.

The spelling of 398110313 in words is "three hundred ninety-eight million, one hundred ten thousand, three hundred thirteen".